This one seems hard to believe but I am sure it will elicit several comments from those gnxp’ers:

Genes may account for more than 40% of such charitable behavior as the massive outpouring of donations following the recent South Asian tsunamis.

A study comparing the social responsibility of identical and non-identical twins showed that genes account for 42% of individual differences in attitudes while common environment accounts for 23% and other factors account for the remainder.

Conducted by Canadian researcher J. Philippe Rushton of the University of Western Ontario, the study also found that genes have a stronger influence on males than females (50% to 40%) while home upbringing has a stronger influence on females (40% to 0%), suggesting that parents may more closely watch the behavior of daughters than of sons.